Remove unused LauncherItemController::IsVisible()

chrome/browser/ui/ash/launcher/browser_shortcut_launcher_item_controller.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/ash/launcher/browser_shortcut_launcher_item_controller.h"
 
 #include <vector>
 
 #include "ash/aura/wm_window_aura.h"
 #include "ash/common/shelf/shelf_delegate.h"
@@ skipping 112 matching lines @@
   if (!browser || !IsBrowserFromActiveUser(browser) ||
       IsSettingsBrowser(browser))
     return;
 
   ash::WmWindowAura::Get(browser->window()->GetNativeWindow())
       ->SetIntProperty(
           ash::WmWindowProperty::SHELF_ID,
           launcher_controller()->GetShelfIDForWebContents(web_contents));
 }
 
-bool BrowserShortcutLauncherItemController::IsVisible() const {
-  Browser* last_browser =
-      chrome::FindTabbedBrowser(launcher_controller()->profile(), true);
-
-  if (!last_browser) {
-    return false;
-  }
-
-  aura::Window* window = last_browser->window()->GetNativeWindow();
-  return ash::wm::IsActiveWindow(window);
-}
-
 void BrowserShortcutLauncherItemController::Launch(ash::LaunchSource source,
                                                    int event_flags) {
 }
 
 ash::ShelfItemDelegate::PerformedAction
 BrowserShortcutLauncherItemController::Activate(ash::LaunchSource source) {
   Browser* last_browser =
       chrome::FindTabbedBrowser(launcher_controller()->profile(), true);
 
   if (!last_browser) {
@@ skipping 181 matching lines @@
         !browser->window()->IsMinimized()) {
       continue;
     }
     if (!IsBrowserRepresentedInBrowserList(browser) &&
         !browser->is_type_tabbed())
       continue;
     active_browsers.push_back(browser);
   }
   return active_browsers;
 }